Cutter-head.



PATENTED MAY 15, 1906. E. $5. 82; G. S. SHIMER.

CUTTER HEAD.

APPLICATION FILED NOV. 21, 1906.

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No. 820,892' PATENTED MAY-15; 1906. B. S. & G. S. SHIMEB.

CUTTER HEAD.

APPLICATION FILED NOV. 21, 1905.

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E. S. & G. S. SHIMER.

CUTTER HEAD.

APPLICATION FILED 11011.21, 1905.

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CUTTER HEAD.

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E. S. 8: G. S. SHIMER.

CUTTER HEAD.

APPLIOATION FILED NOV. 21, 1906.

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UNITED STATES PATENT OFFICE.

ELMER S. SHIMER AND GEORGE S. SHIMER, OF MILTON, PENNSYLVANIA.

CUTTER-HEAD.

Patented. May 15, 1906.

Application filed November 21, 1905. Serial No. 288,471.

To all whom it new concern.

Be it known that we, ELMER S. SHIMER and GEORGE S. SHIMER, citizens of the United States, residing at Milton, in the county of Northumberland and State of Pennsylvania, have invented certain new and useful Improvements in Cutter-Heads, of which the following is a specification.

, Our invention relates to improvements in rotary cutter-heads, particularly for tonguing boards, while it may be readily adapted for grooving, rabbeting, jointing, or otherwise matching the edges of boards. Said invention provides for producing the tongues upon the edges of the boards by reducing the material from above and from below by sets or groups of straight radial bits, in forming the shoulders or bases of said tongues, and.

following up this cutting action by that of circular cutters for forming the upper and lower and outer surfaces of the tongue. The straight radial bits, together with the lower set or two of circular cutters, are carried by a relatively fixed member of the cutter-head, while the two upper circular cutters are carried by a movable and adjustable member or section adapted to be controlled or adjusted by an expansion contrivance of our own type or form and patented by us some time back. It also includes certain structural features requisite for carrying out the aforesaid ends, substantially as will be fully disclosed and specifically pointed out hereinafter.

In the accompanying drawings, illustrating the preferred embodiment of our invention, Figure 1 is a side elevation thereof, disclosing more especially two of the tongueforming bits and an intermediate circular cutter for treating principally the lower surface of the tongue. Fig. 2 is a directly-opposite side elevation of the same, disclosing a duplicate arrangement of parts. Fig. 3 is a like view of the invention from a viewpoint at right angles to the aforesaid views. Fig. 4 is a plan view of the contrivance with the movable or adjustable member or section removed or displaced. Fig. 5 is a disassembled side view of said movable or adjustable section or member. Fig. 6 is a horizontal section through Fig. 1, produced on a line just above the sets or groups of circular cutters. Fig. 7 is a sectional elevation thereof. Fig. 8 is a broken detailed section taken through the main cutter-head member in a vertical line paralleling one of the straight radial bits and extending through its securing or reta ini'ng bolt. Fig. 9 is a detached perspective view of one of the straight radial bits.

In the disclosure of our invention we employ a cutter-head 1, having fixed there n the central spindle-receiving sleeve 2, equipped in its upper end with the usual ad ustingscrew 3 for said head. Said cutter-head is practically circular or disk-like in general outline after the fashion of the like part embodied in our many patents. In the present instance, however, we constitute the head of a principal member or section 1 and of a supplemental member or section I, the former being primarily cast in solid d1sk form, which is then formed in its upper surface with a relatively deep recess or channel or seat 4 receiving the latter member and extending clear across the same and opening laterally therethrough, the bottom of said recess or seat being laterally cut away or recessed, as at 4, for a purpose presently seen.

The movable or adjustable section or member 1 so movable to provide, in conjunction with other parts later described and common in the use of our patented cutter-heads, for the expansion of the cutting action of the circular cutters, is of such outline as to snugly or closely fit into the seat or recess 4 in the primary member or sectlon 1 and within which it is suitably held, being practically rectangular, with its ends conforming to arcs of the circular outline of the latter member, the purpose of which is apparent Said movable or adjustable member or section has extending upward from and integral wlthits upper surface a sleeve or collar like formation 4, which snugly or closely fits the spindlesleeve 2 and permits the passage of the latter therethrough and through said member ltself and between which spindle-sleeve and sa d collar formation suitable bolt connection 5 1s effected. The bolt 5 is tapped or screwthreaded into the receiving-hole therefor 1n the collar formation, but has no such connection with the spindle-receiving sleeve, the hole 5 therein for the reception of the inner end of said bolt being unthreaded and oblong and slightly arcuate in outline to contribute to the cutter-expansion operation, as will be apparent in conducting the latter. It will be noted that the collar-like formation 4 of the member 1 has undercut reductions, as at 4, to receive the opposite edges of said primary member upper surface to allow the sinking or depressing of said member into the recess 4 in properly disposing the circular cutters carried by said latter member and which cutters will be later described. Also it will be seen thatthe lateral walls of the recess 4 are offset somewhat at the bottom of the latter at the outer or forward edges thereof, as at 49, below which extend the end cutter-carrying portions of the movable or adjustable memher 1*. Said end portions of the movable member or section are provided upon the under side with practically semicircular pendent flanges 4 removed somewhat inward from the lateral edges of said member, thus providing offsets 4 at those points which overhang the offsets 4z of the forward or outer edges of the seat or recess 4, said offsets thus serving as interchangeable stops between the aforesaid parts. Said flanges i form the boundaries of seats or recesses 4 for receiving certain cutters before noted, which face outward, the upper surfaces or walls of which latter, however, are somewhat below the lower surface or under side of the section or member 1 and accordingly below the points of juncture of said flanges with the latter, thus providing for thickening or reinforcing the parts where the strain or stress of the cutting action is exerted, as presently made apparent.

Upon the collar-like formation 4 is fitted a milled-surfaced intermediary collar 4 and upon this latter is super osed a second collar or ring 43 these severa parts being suitably equipped and adapted to'cooperate, as in our previous patents, for effecting the cuttereXpansion operation, and therefore need not be herein further referred to.

A number of straight radial bits 6, prefer= ably four, arranged in sets or groups of two, are employed for initiating the tonguing of the boards or material for treatment-that is, for cutting the shoulders or bases of the tongueseach therefore having an outer straight cutting or chisel-like edge, a set or two being supplied to each practically segmental portion 1 of the primary member I as shown, at an angle of ninety degrees apart, say. Said bits for the purpose herein of tonguing the boards or material are of bifurcated formation at their forward effective edges and otherwise in outline practically that shown and are inserted in vertical radial slots 6, opening out through the peripheral edge of the cutter head segments. Said bits are secured in place in any suitable way,

among others by inserting them in slots 6 in suitably nutequipped bolts 6", seated inj sockets 6, formed in the cutter-head seg-l ments and intersecting the bit-receiving slots in vertical lines, said se ments being suitably f Tearing grooves 6 in} formed with shavin'g'c front of said bits. These bits are preferablyof Mushett steel, so called, owing to possessing certain qualities of hardness and which is of considerable value for the purposenoted, especially as cutters or bits made of said steel wi l retain an e'flective cutting edge for several days before requiring sharpening and as thereof, as aforesaid, thus permitting each bit to be initially inserted into its slotted retaining-bolt, and then the thus-assembled bit and bolt be insertedtogether into the cutter head at a single operation. Also we employ in conjunction with said sets or groups of bits two sets or groups of circular cutters 7 7 practically of the type or character herein shown and alternating the aforesaid bits at equal intervals apart, being applied to the primary and adjustable cutter-head members 1 l two being carried by each of the latter. These circular cutters, the two carried by the member 1 being adapted to cut the material so as to dress or shape the upper surface of the forming tongue and the two carried by the member 1 being effective to dress or shape the lower surface of the tongue, are thus adapted to cooperate with the aforesaid straight radial bits in performing the board-tonguing operation, as will be readily appreciated. The circular cutters 7, carried by the primary member, are suitably clamped 'or bolted in position, as shown, in suitable recesses or seats 7 in the under side of said member, with their eflective edges standing outward from the peripheral edge of the latter. The circular cutters 7 of the movable or adjustable member 1 are let into the recesses or seats 4 therein, before referred to, being similarly clamped or bolted, as at 7, in position as the circular cutters 7 aforesaid. Said circular cutters are all suitably seated upon inclined surfaces, as at 7, as heretofore, for clearance in the cutting op- 'eration.

In order to provide for the reception of the cutterseats of the movable or adjustable member 1 as formed by the pendent flanges depending from the under side of said member, the member 1 is cut away or recessed, as at 1", for that purpose.

It will be noted that this cutter-head suitably eq'uipped would be equally adapted for grooving the opposite edge of the board or material, as well as in otherwise treating the latter for matching or jointing pieces for assembling.

We claim- 1. A rotary cutter-head of the character described, comprising a primary member or section carrying sets or groups of straight radial bits effective to act upon the material, and a movable member "or section carrying circular cutters, said primary member also carrylng circular cutters, the circular cutters ITS of said members alternating said bits and su plementing the action of said bits in cutting or acting upon the material or board.

2. A rotary cutterhead of the character described, comprising a primary member having a reduction in its upper surface, extending clear across the same, and a movable or supplemental member or section seated in said reduction, said primary member carrying in its peripheral edge sets of straight radial bits and circular cutters arranged intermediately of said bits and said movable member carrying upon its under side, at the ends, circular cutters, also arranged intermediately of said bits, said circular cutters adapted to act upon the upper and lower edges or surfaces of the product resulting from the action of said bits.

8. A rotary cutter-head of the character described, comprising a primary member carrying groups or sets of straight radial bits and circular cutters arranged intermediately of said bits, said member having in opposite peripheral edges thereof recesses and in its upper surface a seat or reduction extending clear across the same in a line parallel with said peripheral recesses and a supplemental member or section fitted in said reduction or seat and carrying upon its under side, at the ends, circular cutters whose seats are arranged within said peripheral recesses, said circular cutters adapted to act upon the upper and lower edges of the product resulting from the action of said straight bits.

4.. A rotary cutter-head of the character described, comprising a primary member hav: ing a reduction extending clear across thereof, said member also having peripheral re cesses opening upward into said reduction, and a supplemental member fitted into said reduction and having upon its under side, at the ends, pendent flanges let into said peripheral recesses of said primary member, said supplemental cutter-head member also carrying opposite circular cutters arranged in seats formed by said flanges, and said primary cutter-head member carrying groups or sets of straight radial bits and circular cutters, said circular cutters alternating said straight radial bits and adapted to act upon the upper and lower edges or surfaces of the product resulting from the cutting action of said radial bits.

5. A rotary cutter-head of the character described, comprising a primary stationary member equipped with groups or sets of radial bits, circular cutters and a movable member set into said primary member and also equipped with circular cutters, and means for the adjustment of said movable member as in expanding or varying the relative distance between the circular cutters of the primary member and those of the latter member, said circular cutters being adapted to act upon the upper and lower edges or surfaces of the product resulting from the cutting action of said radial bits.

In testimony whereof we affix our signatures in presence of two witnesses.

ELMER S. SHIMER. GEORGE S. SHIMERL Witnesses:

JESSE W. MUMMEY, E. F. MYERLEY. 

